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aco/spill: use spills_entry instead of spills_exit to kill linear VGPRs

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If a predecessor has only spilled constants (no temporaries), spills_exit
will be empty.

fossil-db (Sienna Cichlid):
Totals from 2 (0.00% of 128647) affected shaders:
Latency: 139106 -> 139104 (-0.00%)

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/5633
Cc: mesa-stable
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13821>
(cherry picked from commit cc2894345f1161fcbb2f9b9150257e0f6b0b303e)
This commit is contained in:
Rhys Perry 2021-11-16 17:33:11 +00:00 committed by Eric Engestrom
parent 73f5d5053e
commit 3defc6bc47
2 changed files with 2 additions and 2 deletions
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2
.pick_status.json
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@ -1489,7 +1489,7 @@
"description": "aco/spill: use spills_entry instead of spills_exit to kill linear VGPRs",
"nominated": true,
"nomination_type": 0,
"resolution": 0,
"resolution": 1,
"main_sha": null,
"because_sha": null
},

2
src/amd/compiler/aco_spill.cpp
View File

@ -1614,7 +1614,7 @@ assign_spill_slots(spill_ctx& ctx, unsigned spills_to_vgpr)
continue;
bool can_destroy = true;
for (std::pair<Temp, uint32_t> pair : ctx.spills_exit[block.linear_preds[0]]) {
for (std::pair<Temp, uint32_t> pair : ctx.spills_entry[block.index]) {
if (ctx.interferences[pair.second].first.type() == RegType::sgpr &&
slots[pair.second] / ctx.wave_size == i) {